CVE-2026-32301

CRITICAL

Centrifugo < 6.7.0 - Server-Side Request Forgery via Dynamic JWKS URL

Title source: manual
STIX 2.1

Description

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.7.0, Centrifugo is vulnerable to Server-Side Request Forgery (SSRF) when configured with a dynamic JWKS endpoint URL using template variables (e.g. {{tenant}}). An unauthenticated attacker can craft a JWT with a malicious iss or aud claim value that gets interpolated into the JWKS fetch URL before the token signature is verified, causing Centrifugo to make an outbound HTTP request to an attacker-controlled destination. This vulnerability is fixed in 6.7.0.

References (1)

Core 1
Core References

Scores

CVSS v3 9.3
EPSS 0.0026
EPSS Percentile 16.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (3)
centrifugal/centrifugo < 6.7.0 (2 CPE variants)
centrifugal/centrifugo 0 (4 CPE variants)Go
centrifugal/centrifugo 0 - 6.7.0Go
Published Mar 13, 2026
Tracked Since Mar 14, 2026